[Yaiba]

Ok, I really want the items that were posted for the serial number. An example is the Logitech G910 so many serials were posted for that item so it's not a problem to get the serial anymore. I read a post on TBN explaining SE and it states that you might need a receipt. It would be great if you guys could tell me the big companies that need a receipt so I could know what companies not to try out because I'm new to this and just starting to learn it.